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1 /*
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2 Loosely based on auth_passwd.c from popa3d by
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3 Solar Designer <solar@openwall.com>
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4
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5 Copyright (C) 2002 Timo Sirainen
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6 */
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7
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8 #define _XOPEN_SOURCE 4
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9 #define _XOPEN_SOURCE_EXTENDED
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10 #define _XPG4_2
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11
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12 #include "common.h"
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13
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14 #ifdef USERINFO_PASSWD
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15
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16 #include "userinfo.h"
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17 #include "userinfo-passwd.h"
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18
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19 #include <unistd.h>
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20
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21 void passwd_fill_cookie_reply(struct passwd *pw, AuthCookieReplyData *reply)
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22 {
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23 i_assert(sizeof(reply->user) > strlen(pw->pw_name));
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24 i_assert(sizeof(reply->home) > strlen(pw->pw_dir));
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25
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26 reply->uid = pw->pw_uid;
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27 reply->gid = pw->pw_gid;
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28
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29 strcpy(reply->user, pw->pw_name);
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30 strcpy(reply->home, pw->pw_dir);
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31 }
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32
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33 static int passwd_verify_plain(const char *user, const char *password,
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34 AuthCookieReplyData *reply)
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35 {
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36 struct passwd *pw;
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37 char *passdup;
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38 int result;
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39
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40 pw = getpwnam(user);
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41 if (pw == NULL || !IS_VALID_PASSWD(pw->pw_passwd))
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42 return FALSE;
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43
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44 /* check if the password is valid */
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45 passdup = (char *) t_strdup(password);
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46 result = strcmp(crypt(passdup, pw->pw_passwd), pw->pw_passwd) == 0;
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47
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48 /* clear the passwords from memory */
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49 memset(passdup, 0, strlen(passdup));
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50 memset(pw->pw_passwd, 0, strlen(pw->pw_passwd));
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51
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52 if (!result)
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53 return FALSE;
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54
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55 /* password ok, save the user info */
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56 passwd_fill_cookie_reply(pw, reply);
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57 return TRUE;
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58 }
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59
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60 static void passwd_deinit(void)
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61 {
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62 endpwent();
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63 }
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64
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65 UserInfoModule userinfo_passwd = {
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66 NULL,
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67 passwd_deinit,
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68
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69 passwd_verify_plain,
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70 NULL
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71 };
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72
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73 #endif
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